EP0780598A1 - Dämpfungsmechanismus für einen Riemenspanner - Google Patents
Dämpfungsmechanismus für einen Riemenspanner Download PDFInfo
- Publication number
- EP0780598A1 EP0780598A1 EP96308914A EP96308914A EP0780598A1 EP 0780598 A1 EP0780598 A1 EP 0780598A1 EP 96308914 A EP96308914 A EP 96308914A EP 96308914 A EP96308914 A EP 96308914A EP 0780598 A1 EP0780598 A1 EP 0780598A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pivot
- tensioner
- arm
- belt
- brake shoe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H7/00—Gearings for conveying rotary motion by endless flexible members
- F16H7/08—Means for varying tension of belts, ropes, or chains
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H7/00—Gearings for conveying rotary motion by endless flexible members
- F16H7/08—Means for varying tension of belts, ropes, or chains
- F16H7/10—Means for varying tension of belts, ropes, or chains by adjusting the axis of a pulley
- F16H7/12—Means for varying tension of belts, ropes, or chains by adjusting the axis of a pulley of an idle pulley
- F16H7/1209—Means for varying tension of belts, ropes, or chains by adjusting the axis of a pulley of an idle pulley with vibration damping means
- F16H7/1218—Means for varying tension of belts, ropes, or chains by adjusting the axis of a pulley of an idle pulley with vibration damping means of the dry friction type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H7/00—Gearings for conveying rotary motion by endless flexible members
- F16H7/08—Means for varying tension of belts, ropes, or chains
- F16H2007/0802—Actuators for final output members
- F16H2007/081—Torsion springs
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H7/00—Gearings for conveying rotary motion by endless flexible members
- F16H7/08—Means for varying tension of belts, ropes, or chains
- F16H7/0829—Means for varying tension of belts, ropes, or chains with vibration damping means
- F16H2007/084—Means for varying tension of belts, ropes, or chains with vibration damping means having vibration damping characteristics dependent on the moving direction of the tensioner
Definitions
- the invention relates to a tensioner with a damping mechanism and a belt drive system that includes such s tensioner. More particularly, the invention relates to a tensioner with a torsional spring that biases the position of a pivot-arm to which a belt engaging pulley is rotatably mounted.
- the tensioner of the invention with its damping mechanism is particularly useful in controlling tension of a V-ribbed belt drive system such as a front end accessory drive for automotive engine applications.
- a mechanical tensioner is used to automatically control the tension of a V-ribbed belt of a front end accessory drive for automotive engine applications.
- Such a tensioner has a pivot-arm that rotates about a pivot secured to a base and uses a sleeve-bushing on the pivot to provide a bearing surface for the rotating pivot-arm.
- Many of such bushings are made of plastic and are subject to wear over the expected life of the tensioner.
- a torsional spring is often used with one end connected to the pivot-arm and the other end interconnected through the base to bias the position of the pivot-arm and position an attached pulley against a belt.
- the spring is also used to generate a spring force operative with a damping means that generates a normal force component to a friction sliding surface to inhibit or dampen oscillatory movements of the pivot-arm.
- the bearing for the pulley is in the same radial plane as the bushing so that bushing loads are minimized and bushing wear does not appreciably lead to "free play” or "cocking" of the pivot-arm with attendant misalignment of the pulley over the expected operative life of the tensioner.
- Examples of belt tensioners with the pulley bearing aligned in a common radial plane with the pivot-arm pivot bushing are disclosed in U.S. Patent Nos. 4,696,663 and 5,045,031.
- Another belt tensioner design centralizes the location of the pivot-arm between oppositely wound torsional springs and locates the pulley bearing midway between nylon insert bushings.
- the symmetrical design of the springs and location of the bushings result in substantial equal wear of each bushing.
- An example of such a tensioner is disclosed at Page 8 of SAE Technical Paper Series Number 790699. Problems of such tensioners include: their bulk because of the two spring design making them unsuitable for fitting within the available space limitations; their cost because of the several number of parts associated with the two spring design; and their lack of a sophisticated damping mechanism.
- a tensioner design that solves the bulk, cost, and damping problems of the aforementioned SAE tensioner is disclosed in U.S. Patent No. 4,473,362.
- the '362 tensioner has a pivot-arm attached to an off-set cylindrical member that supports the pivot-arm and rotates about a pivot secured to a base. Only one torsional spring is used with one end connected to the pivot-arm and the other end connected to the base.
- a single sleeve-type bushing on the pivot has a bearing surface that supports the cylindrical member. The radial plane of a pulley bearing is off-set in relation to the sleeve-type bushing which introduces a moment or couple as a load which must be carried by the bushing.
- Such tensioners are sometimes referred as "Zed” type tensioners because of the off-set of the pulley relative to its support or base structure. Unequal pressure loads introduced into bearing surfaces of the bushing can result in excessive bushing wear and attendant pulley misalignment.
- the belt of a drive system utilizing such Zed type tensioners engages the pulley and generates a belt force at the pulley which is transmitted to the cylindrical member (hereinafter hub load).
- hub load the cylindrical member
- the unequal loads to the bushing are reduced by a damping means that generates a normal force component acting in generally the same direction as the belt force component transmitted to the cylindrical member.
- a tensioner is provided that is particularly useful in V-ribbed front end accessory belt drive systems used in automotive applications where pulley alignment over the expected life of the tensioner is important.
- the belt tensioner of the invention is of the "Zed" type with a pivot-arm attached to an off-set cylindrical member that supports the pivot-arm and rotates about a pivot secured to a base.
- a sleeve-type bushing on the pivot has a bearing surface that supports the cylindrical member.
- a pulley is attached to the pivot-arm for engaging a belt of a belt drive system and receiving a belt load that generates a belt force component that is transmitted to the cylindrical member (hub load).
- the hub load and normal force component generated by the damping mechanism are carried by at least one or two bushings that have two axially spaced-apart bearing surfaces.
- the bushings have an axial length that size the bearing surfaces for an average pressure contact such that each bearing surface radially wears at substantially the same rate. The bearing surfaces wearing in at substantially the same radial rate assures pulley alignment over the expected life of the tensioner.
- a damping mechanism where the normal force generated by the damping means is greater than the spring force activating the damping mechanism.
- the damping means has a brake shoe with an outer arcuate surface that engages the inside of a second cylindrical member to provide friction surface sliding therewith.
- the brake shoe has two oppositely facing inside ramp surfaces where one of the ramp surfaces slideably engages a complementary ramp surface of the base and the other ramp surface slideably engages an extension of the spring end which applies the spring force to the brake shoe. The angle between the two ramp surfaces and direction of forces are such that a normal force component transferred to the brake shoe is greater than the applied spring force.
- Another advantage of the invention is a damping mechanism which generates a normal force greater than the spring force which can be used for secondary advantages such as increased damping.
- a tensioner 10 with a pulley 12 is illustrated as a component part of a belt drive system that includes a belt 16 and several pulleys.
- the belt 16 is entrained around a crank pulley 18, a fan/water pump pulley 20, a power steering pulley 22, an alternator pulley 24, an idler pulley 26, and the tensioner pulley 12.
- the tensioner pulley 12 engages the belt 16 and is shown in several positions to schematically show how the pulley moves to adjust belt tension.
- the tensioner pulley 12 engages the belt 16 and receives a belt load in the form of belt tension T1, T2, of adjacent belt spans 28, 30.
- the belt tension T1, T2 combine to generate a belt force component BF along a bisector or an angle formed between the belt spans 28, 30.
- the belt force component being axially off-set from a pivot 32 of the tensioner, generates a complicated hub load including forces and moments that are symbolically (i.e. not specifically) represented by the arrow HL.
- the tensioner 10 is of the mechanical type and includes a base 34, a torsional spring 36, with one end 38 connected to a pivot-arm 40 and an other end 42 interconnected through the base generating a spring force operating with a damping means 44.
- the pivot-arm 40 is attached to an off-set cylindrical member 46 that supports the pivot-arm 40 and rotates about the pivot 32.
- Sleeve-bushings 48, 50 are preferably of the polymeric type and positioned on the pivot to support the cylindrical member with its attached pivot arm.
- the bushings may included flanges 52, 54 as a thrust bearing for the cylindrical member and a flanged fastener such as a bolt 56 that retains the pivot-arm.
- the pulley 12 is rotatable mounted to the pivot-arm 40 such as by means of a ball bearing 58 on a stub shaft 60 formed of the pivot-arm.
- the bearing is retained on the stub shaft such as by means of a bolt 62.
- Ears 64, 66 with bolt receiving holes 68, 70 may be used a means for mounting the tensioner to an engine (not shown) as part of the belt drive system.
- a second cylindrical member 72 that is off-set from the pivot-arm and coaxial with the first cylindrical member 46 provides a housing for the torsional spring and the damping means 44.
- the second cylindrical member extends into a cylindrical depression 74 formed in the housing in a somewhat "telescopic" fashion.
- a dust seal 76 maintains a clean environment for the spring and damping means 44.
- the second cylindrical member also forms part of the damping means.
- the damping means 44 is a mechanism that includes an extension 78 of spring end 42, a brake shoe 80 with an outside arcuate friction surface 82 that engages a complementary inside surface 84 of the second cylindrical member 72.
- the brake shoe has oppositely facing, inside ramp surfaces with a space intercept at an apex of an angle A.
- the brake shoe has a lining 90 that defines the friction surface 82 and is attached to the shoe such as by teeth 92 that snap into slots 94 formed of the brake shoe.
- the end of the spring 42 that interconnects through the base 34 bends around a protuberance 96 (shown as a post) formed of the base or attached to the base.
- the extension 78 of the spring end slideably engages inside ramp surface 86 formed of the brake shoe.
- the base includes a protuberance 100 (shown as a post) formed of the base or attached to the base and which has a complementary ramp surface 102 that slideably engages the ramp surface 88 formed of the brake shoe.
- the spring 36 under torsion applies a spring force SF substantially normal to inside ramp surface 86 pressing inside ramp surface 88 of the shoe against the complementary ramp surface 102 of the base and pressing the lining against the complementary inside surface 84 of the second cylindrical member 72 causing a reactionary force RF to be imparted to the shoe.
- the spring force SF applied to the inside ramp surface 86 in combination with the reactive force RF at the inside ramp surface 88 generates a normal force NF that is equal and opposite a force 104 carried at the complementary inside surface 84 of the second cylindrical member 72.
- the so generated normal force NF is generally in the same direction (generally parallel) to the belt force BF.
- the magnitude of the spring force can be varied by changing the angle A between the inside ramp surfaces and the direction of the spring force SF. The greater the angle, the greater the normal force.
- the angle A between inside ramp surfaces may be from about 60 to 140°, but more preferably, angle A is from about 90 to 120°.
- the damping means 44 may be used in tensioners using a torsional spring such as of the type disclosed in U.S. Patent No. 4,696,663 and where it is desired to increase the normal force such as for the purpose of enhanced damping.
- the magnitude, direction, and location of the belt force and normal force of a tensioner may optionally be used to size the bearing surface of a bushing disposed on the pivot for an average pressure contact so that each bearing surface radially wears at substantially the same rate.
- the belt force BF being off-set from the cylindrical member 46 operates to apply a clockwise moment to the cylindrical member 46 in the cross-section shown in Figure 4.
- the normal force NF operating against the second cylindrical member operates at a moment arm 126 to move the cylindrical member in a counter clockwise direction in the plane of the cross-section of Figure 4.
- the forces so introduced to the cylindrical member are carried by bushings 48, 50 which each has a bearing surface that supports the cylindrical surface and may be represented by a bearing force component BC1, BC2.
- the bearing surfaces are spaced a distance D apart.
- Bearing force component BC1 operates at a moment arm 128 relative to the belt force BF and bearing surface component BC2 operates at a moment arm 130 relative to bearing force BF.
- each bearing 48, 50 has a bearing surface BS1, BS2 that supports a load CL1, CL2, as the pivot-arm is rotated in a clockwise direction.
- a damping mechanism generates a force which adds to the loads carried by the bearings when the pivot-arm is moved in one direction and subtracts to the loads carried by the bearings when the pivot-arm is moved in a clockwise direction.
- the load CL1 introduced to the bearing surface BS1 in the clockwise direction is greater than the load CL2 introduced into the bearing surface BS2 as the pivot-arm is moved in a clockwise direction.
- the loads to the bearing surface substantially change when the pivot-arm is moved in the opposite or counter clockwise direction.
- the load CC1 that is introduced to bearing surface BS1 is smaller than the load CC2 introduced to bearing surface BS2 when the pivot-arm is moved in a counter clockwise direction.
- the loads CL1 and CC1 may be averaged to determine an average load that must be carried by bearing surface BS1.
- the load CL2 and CC2 may be averaged to determine the loads that must be carried by bearing surface BS2. It is probable that the so averaged loads are unequal as illustrated in Figure 5C.
- the average load CA1 (equal and opposite BC2) is larger than the average load CA2 (equal and opposite BC2).
- bearing surface BS1 and BS2 have an axial length BL1, BL2 that size each bearing surface for an average pressure contact PB1, PC2 such that each bearing surface radially wears at substantially the same rate.
- bushing 48 has a longer axial length BL1 than does bushing 50 having axial length BL2 so that the pressure contact PC1 substantially equals PC2.
- the length of the bushings can be sized for a pressure contact that yields substantially the same radial wear rate.
- a tensioner of the invention was constructed with a 76.2 mm diameter pulley, a 100.8 in/lbs torsional spring, and with the following characteristics:
- the average normal force NF is greater than the average spring force which is in accordance with the feature of the invention.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US573827 | 1995-12-18 | ||
US08/573,827 US5632697A (en) | 1995-12-18 | 1995-12-18 | Damping mechanism for a tensioner |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0780598A1 true EP0780598A1 (de) | 1997-06-25 |
EP0780598B1 EP0780598B1 (de) | 2000-11-02 |
Family
ID=24293546
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96308914A Expired - Lifetime EP0780598B1 (de) | 1995-12-18 | 1996-12-09 | Dämpfungsmechanismus für einen Riemenspanner |
Country Status (9)
Country | Link |
---|---|
US (1) | US5632697A (de) |
EP (1) | EP0780598B1 (de) |
JP (1) | JP2854292B2 (de) |
KR (1) | KR100208042B1 (de) |
AT (1) | ATE197341T1 (de) |
BR (1) | BR9606062A (de) |
CA (1) | CA2192422C (de) |
DE (1) | DE69610811T2 (de) |
ES (1) | ES2152497T3 (de) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005047265A1 (de) * | 2005-10-01 | 2007-04-05 | Schaeffler Kg | Spannvorrichtung eines Zugmitteltriebs |
DE102006023565A1 (de) * | 2006-05-19 | 2007-11-22 | Schaeffler Kg | Spanneinrichtung für ein Zugmittel, insbesondere einen Riemen oder eine Kette |
DE102007015676A1 (de) * | 2007-03-31 | 2008-10-02 | Schaeffler Kg | Spannvorrichtung eines Zugmitteltriebs |
Families Citing this family (49)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5964674A (en) * | 1997-03-21 | 1999-10-12 | The Gates Corporation | Belt tensioner with bottom wall of base juxtaposed pivot arm |
US5924947A (en) * | 1997-07-23 | 1999-07-20 | Ford Global Technologies, Inc. | Asymmetrically hydraulically damped drivebelt tensioner for automotive engine |
US5935032A (en) | 1998-06-02 | 1999-08-10 | The Gates Corporation | Tensioner with second pivot-arm for damping mechanism |
US5938552A (en) * | 1998-06-02 | 1999-08-17 | The Gates Corporation | Tensioner with damping shoe activated by compression spring |
US6565468B2 (en) | 1999-12-21 | 2003-05-20 | The Gates Corporation | Tensioner with damping mechanism |
US6582332B2 (en) * | 2000-01-12 | 2003-06-24 | The Gates Corporation | Damping mechanism for a tensioner |
EP1250542B1 (de) * | 2000-01-12 | 2004-09-22 | The Gates Corporation | Riemenspanner mit dämpfermechanismus |
JP4050986B2 (ja) * | 2000-10-03 | 2008-02-20 | ザ ゲイツ コーポレイション | モータ/ジェネレータと補機ベルト伝動システム |
US7588507B2 (en) | 2001-04-13 | 2009-09-15 | Unitta Company | Thin autotensioner |
US6609988B1 (en) * | 2001-05-24 | 2003-08-26 | The Gates Corporation | Asymmetric damping tensioner belt drive system |
US7086373B2 (en) * | 2002-11-01 | 2006-08-08 | The Gates Corporation | Damped accessory drive system including a motor/generator |
US7004863B2 (en) | 2002-05-15 | 2006-02-28 | The Gates Corporation | Damping mechanism |
US7186196B2 (en) * | 2002-07-18 | 2007-03-06 | Dayco Products, Llc | Belt tensioner with integral damping |
US7090606B2 (en) * | 2003-07-03 | 2006-08-15 | The Gates Corporation | Adjustable tensioner |
US8337344B2 (en) * | 2005-06-20 | 2012-12-25 | Dayco Europe S.R.L. | Asymetric damping belt tensioner |
US8075433B2 (en) * | 2005-06-28 | 2011-12-13 | Dayco Products, Llc | Belt tensioner with damping member |
DE102005052453A1 (de) * | 2005-11-03 | 2007-05-10 | Schaeffler Kg | Spanneinrichtung für ein Zugmittel, insbesondere einen Riemen |
DE102005060916A1 (de) * | 2005-12-20 | 2007-06-28 | Schaeffler Kg | Spannvorrichtung für Zugmitteltriebe |
DE102005060917A1 (de) * | 2005-12-20 | 2007-06-28 | Schaeffler Kg | Spannvorrichtung für Zugmitteltriebe |
DE102006004544A1 (de) * | 2006-02-01 | 2007-08-02 | Schaeffler Kg | Spanneinrichtung für ein Zugmittel, insbesondere einen Riemen oder eine Kette |
DE102006004507A1 (de) * | 2006-02-01 | 2007-08-02 | Schaeffler Kg | Spanneinrichtung für ein Zugmittel, insbesondere für einen Riemen oder eine Kette |
DE102006040672A1 (de) * | 2006-08-30 | 2008-03-06 | Schaeffler Kg | Mechanische Spannsysteme für Zugmittelgetriebe |
US7678002B2 (en) * | 2006-08-31 | 2010-03-16 | Dayco Products, Llc | One-way clutched damper for automatic belt tensioner |
DE102006059550A1 (de) * | 2006-12-16 | 2008-06-19 | Schaeffler Kg | Spannvorrichtung für einen Zugmitteltrieb |
DE102007031298A1 (de) * | 2007-07-05 | 2009-01-08 | Schaeffler Kg | Dämpfungsvorrichtung eines mechanischen Spannsystems für einen Zugmitteltrieb |
DE102007055664A1 (de) | 2007-11-21 | 2009-05-28 | Schaeffler Kg | Werkstoffmischung aus Polyamid-Polyethylen für Spannsysteme |
DE102008050384A1 (de) * | 2008-10-02 | 2010-04-08 | Schaeffler Kg | Spann- und Dämpfungsvorrichtung für Zugmitteltriebe |
WO2010037232A1 (en) | 2008-10-02 | 2010-04-08 | Litens Automotive Partnership | Compact tensioner with sustainable damping |
JP5276520B2 (ja) * | 2008-10-10 | 2013-08-28 | 智和 石田 | オートテンショナ |
US8403785B2 (en) | 2008-11-05 | 2013-03-26 | Dayco Ip Holdings, Llc | Clutched damper for a belt tensioner |
DE102009020589A1 (de) * | 2009-05-09 | 2010-11-11 | Schaeffler Technologies Gmbh & Co. Kg | Riemenspanneinheit |
US20110015017A1 (en) * | 2009-07-17 | 2011-01-20 | Alexander Serkh | Tensioner |
US8157682B2 (en) * | 2009-07-17 | 2012-04-17 | The Gates Corporation | Tensioner |
DE102010019066A1 (de) * | 2010-05-03 | 2011-11-03 | Schaeffler Technologies Gmbh & Co. Kg | Riemenspanner |
US8439781B2 (en) | 2010-06-22 | 2013-05-14 | Dayco Ip Holdings, Llc | Radial damping mechanism and use for belt tensioning |
US8545352B2 (en) | 2010-09-02 | 2013-10-01 | Dayco Ip Holdings, Llc | Tensioner with expanding spring for radial frictional asymmetric damping |
US8617013B2 (en) | 2010-09-02 | 2013-12-31 | Dayco Ip Holdings, Llc | Tensioner with expanding spring for radial frictional asymmetric damping |
JP5627621B2 (ja) * | 2011-04-28 | 2014-11-19 | 三ツ星ベルト株式会社 | オートテンショナ |
US20140287860A1 (en) * | 2011-10-26 | 2014-09-25 | Litens Automotive Partnership | Tensioner with damping structure made from two components with no rotational play therebetween |
US8932163B2 (en) * | 2012-02-20 | 2015-01-13 | Dayco Ip Holdings, Llc | Belt tensioning device with variable spring factor |
US9777806B2 (en) | 2012-03-28 | 2017-10-03 | Dayco Ip Holdings, Llc | Sealed belt tensioning device |
US9394977B2 (en) | 2013-03-15 | 2016-07-19 | Dayco Ip Holdings, Llc | Tensioner with expanding spring for radial frictional asymmetric damping |
CN105264267B (zh) * | 2013-05-14 | 2018-04-27 | 利滕斯汽车合伙公司 | 具有改进阻尼的张紧器 |
CN203770558U (zh) * | 2014-03-25 | 2014-08-13 | 宁波丰茂远东橡胶有限公司 | 一种发动机用大阻尼低衰减张紧器 |
US9982760B2 (en) * | 2015-02-12 | 2018-05-29 | Ningbo Fengmao Far-East Rubber Co., Ltd. | Tensioner for engine with large and stable damping and minimum deflection of shaft |
US9618099B2 (en) * | 2015-07-13 | 2017-04-11 | Gates Corporation | Tensioner with secondary damping |
JP6527550B2 (ja) * | 2016-06-27 | 2019-06-05 | 三ツ星ベルト株式会社 | 補機駆動ベルトシステムに備わるオートテンショナ |
US10883575B2 (en) | 2018-01-03 | 2021-01-05 | Gates Corporation | Tensioner |
BR112023017253A2 (pt) * | 2021-02-26 | 2023-10-03 | Dayco Ip Holdings Llc | Tensor de correia de alta compensação com força de contrabalanceamento por mola de torção |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4473362A (en) | 1981-07-08 | 1984-09-25 | Litens Automotive Inc. | Belt tensioner with variably proportional damping |
US4696663A (en) | 1986-04-14 | 1987-09-29 | Dyneer Corporation | Belt tensioner |
US5045029A (en) * | 1990-12-20 | 1991-09-03 | Gates Power Drive Products, Inc. | Pulley encased tensioner with damping |
US5045031A (en) | 1990-09-26 | 1991-09-03 | Gates Power Drive Products, Inc. | Tensioner for an endless power transmission member and system |
EP0575662A1 (de) * | 1992-06-25 | 1993-12-29 | Litens Automotive GmbH | Riemenspannvorrichtung |
US5470280A (en) * | 1994-03-18 | 1995-11-28 | Unitta Company | Belt tensioner |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4557709A (en) * | 1982-05-03 | 1985-12-10 | I Corp. | Belt tensioner system |
US5354242A (en) * | 1992-10-08 | 1994-10-11 | St John Richard C | Automatic belt tensioner with an enclosed flat wire power spring and improved zeroing and damping means |
US5439420A (en) * | 1994-04-04 | 1995-08-08 | Ford Motor Company | Accessory drive system for an automotive engine |
-
1995
- 1995-12-18 US US08/573,827 patent/US5632697A/en not_active Expired - Lifetime
-
1996
- 1996-12-09 CA CA002192422A patent/CA2192422C/en not_active Expired - Lifetime
- 1996-12-09 EP EP96308914A patent/EP0780598B1/de not_active Expired - Lifetime
- 1996-12-09 ES ES96308914T patent/ES2152497T3/es not_active Expired - Lifetime
- 1996-12-09 AT AT96308914T patent/ATE197341T1/de not_active IP Right Cessation
- 1996-12-09 DE DE69610811T patent/DE69610811T2/de not_active Expired - Lifetime
- 1996-12-13 KR KR1019960065317A patent/KR100208042B1/ko not_active IP Right Cessation
- 1996-12-18 BR BR9606062-0A patent/BR9606062A/pt not_active IP Right Cessation
- 1996-12-18 JP JP8354143A patent/JP2854292B2/ja not_active Expired - Lifetime
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4473362A (en) | 1981-07-08 | 1984-09-25 | Litens Automotive Inc. | Belt tensioner with variably proportional damping |
US4473362B1 (de) | 1981-07-08 | 1991-07-09 | Litens Automotive Inc | |
US4696663A (en) | 1986-04-14 | 1987-09-29 | Dyneer Corporation | Belt tensioner |
US5045031A (en) | 1990-09-26 | 1991-09-03 | Gates Power Drive Products, Inc. | Tensioner for an endless power transmission member and system |
US5045029A (en) * | 1990-12-20 | 1991-09-03 | Gates Power Drive Products, Inc. | Pulley encased tensioner with damping |
EP0575662A1 (de) * | 1992-06-25 | 1993-12-29 | Litens Automotive GmbH | Riemenspannvorrichtung |
US5470280A (en) * | 1994-03-18 | 1995-11-28 | Unitta Company | Belt tensioner |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005047265A1 (de) * | 2005-10-01 | 2007-04-05 | Schaeffler Kg | Spannvorrichtung eines Zugmitteltriebs |
DE102006023565A1 (de) * | 2006-05-19 | 2007-11-22 | Schaeffler Kg | Spanneinrichtung für ein Zugmittel, insbesondere einen Riemen oder eine Kette |
DE102007015676A1 (de) * | 2007-03-31 | 2008-10-02 | Schaeffler Kg | Spannvorrichtung eines Zugmitteltriebs |
US8562467B2 (en) | 2007-03-31 | 2013-10-22 | Schaeffler Technologies AG & Co. KG | Tensioning device of a belt and chain drive |
Also Published As
Publication number | Publication date |
---|---|
KR970046330A (ko) | 1997-07-26 |
BR9606062A (pt) | 2002-05-14 |
EP0780598B1 (de) | 2000-11-02 |
CA2192422A1 (en) | 1997-06-19 |
DE69610811D1 (de) | 2000-12-07 |
KR100208042B1 (ko) | 1999-07-15 |
ES2152497T3 (es) | 2001-02-01 |
JPH09189348A (ja) | 1997-07-22 |
US5632697A (en) | 1997-05-27 |
CA2192422C (en) | 2004-09-28 |
DE69610811T2 (de) | 2001-06-07 |
ATE197341T1 (de) | 2000-11-15 |
JP2854292B2 (ja) | 1999-02-03 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0780598B1 (de) | Dämpfungsmechanismus für einen Riemenspanner | |
EP0780597B1 (de) | Riemenspanner mit Dämpfungsmechanismus und Riementriebsystem | |
EP1242756B1 (de) | Riemenspanner mit dämpfungsmechanismus | |
EP0866240B1 (de) | Riemenspanner | |
MXPA96006527A (en) | Tensioner with shock absorber mechanism and body system | |
EP0907040B1 (de) | Riemenspannvorrichtung | |
KR960015234B1 (ko) | 해제 가능한 벨트리드 댐핑을 구비한 벨트텐셔너 | |
CA2499382C (en) | Belt tensioner | |
EP0307100A2 (de) | Riemenspannvorrichtung mit zunehmend gekrümmter Bewegungsbahn | |
MX2011002906A (es) | Tensor. | |
EP1250542B1 (de) | Riemenspanner mit dämpfermechanismus | |
US7597639B2 (en) | Belt tensioner | |
MXPA96006526A (en) | Cushion mechanism for a ten | |
MXPA98008145A (es) | Tensionador de banda |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE |
|
17P | Request for examination filed |
Effective date: 19971201 |
|
17Q | First examination report despatched |
Effective date: 19990322 |
|
GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: NL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20001102 Ref country code: LI Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20001102 Ref country code: GR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20001102 Ref country code: FI Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20001102 Ref country code: CH Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20001102 |
|
REF | Corresponds to: |
Ref document number: 197341 Country of ref document: AT Date of ref document: 20001115 Kind code of ref document: T |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: EP |
|
REF | Corresponds to: |
Ref document number: 69610811 Country of ref document: DE Date of ref document: 20001207 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LU Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20001209 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20001211 |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: FG4D |
|
ET | Fr: translation filed | ||
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: MC Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20010102 |
|
REG | Reference to a national code |
Ref country code: ES Ref legal event code: FG2A Ref document number: 2152497 Country of ref document: ES Kind code of ref document: T3 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: PT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20010202 Ref country code: DK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20010202 |
|
NLV1 | Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act | ||
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: MM4A |
|
26N | No opposition filed | ||
REG | Reference to a national code |
Ref country code: GB Ref legal event code: IF02 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: ES Payment date: 20081226 Year of fee payment: 13 Ref country code: AT Payment date: 20081119 Year of fee payment: 13 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: IT Payment date: 20081223 Year of fee payment: 13 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: BE Payment date: 20090202 Year of fee payment: 13 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: SE Payment date: 20081229 Year of fee payment: 13 |
|
BERE | Be: lapsed |
Owner name: THE *GATES CORP. D/B/A/ THE GATES RUBBER CY Effective date: 20091231 |
|
EUG | Se: european patent has lapsed | ||
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: AT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20091209 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: BE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20091231 |
|
REG | Reference to a national code |
Ref country code: ES Ref legal event code: FD2A Effective date: 20110304 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20091209 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20091210 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: ES Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20110303 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: ES Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20091210 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 20 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 20151229 Year of fee payment: 20 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20151217 Year of fee payment: 20 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20151229 Year of fee payment: 20 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R071 Ref document number: 69610811 Country of ref document: DE |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: PE20 Expiry date: 20161208 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION Effective date: 20161208 |